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TO ALL WHOM IT MAYCONCERN:

Be it known thas I, WILLIAM E. HOPKINS, of Parkman, Geauga county, State of Ohio, have invented a Stave, Heading, and Shingle-Machine; and I do hereby declare the following to be a full, clear, and exact description of the saine, reference being had t'o the accompanying drawings, in which- Figure l is a plan or top view of a stave, heading, and shingle-machine constructed in accordance with my i invention;

Figure 2 is an end elevation, and

Figure 3 is a front elevation of the same.

Figure 4 is a plan view of thev adjustable saw-table, and

Figure 5 is an end View of the same.

Similar letters of reference denote corresponding parts in all the figures.

My invention consists in the employment of a narrow endless belt-saw, arranged to work upon pnlleysv'or wheels, in connection with an adjustable feed or saw-table, in such manner as to adaptrthe one saw to sawing of staves for casks or vessels of different diameters or dimensions, and also to the sawing of shingles and headings, as will be hereinafter described.

In the accompanying drawings, A represents a framing of any suitable construction, and of the required dimensions to adapt it to the work it is to perform. Said framing consists, in this instance, of four corner uprights or posts, A, connected together at the top and bottom by horizontal frame-pieces, A1, the whole forming a stout table or bench of the desired height, and provided with suitable'boxes or bearings, in which are' mounted the two upright shafts B B', to o ne of which, B, motion is communicated in any suitable manner. TheV shafts B are arranged at thc opposite sides or ends of the framing, and are armed on their upper ends with the large anged pulleys of wheels C C', upon which is mounted the endless saw-belt D, to which motion is imparted from one of the pulleys C, and which, in turn, communicates motion to the pulley or wheel C. A The bearings of shaft B are made adjustable, to and from the bearings of shaft B, to admit of the ready application and removal of the saw-belt when desired, andalso for the purpose of giving the proper tension to said belt. The adjustment of the bearing. is effected, in this-instance, by means of set-screws 6 Iz. Any other suitable device for the purpose may be'lused. The dange c, formed upon the side of the wheel C, serves'to maintain the beltsaw upon the pulleysA in'its proper working relation, and to prevent its being thrown ofi', by the pressure against it, of the block from which-thestaves are being cut orsawed, v

The frame A is' shown as extended upon its opposite sides in front and in rea-r, (see figs. 1 and 2,) to form suitable' supports for the adjustable saw-tables E and F, the supports for the table E consisting of an extension of the frame-pieces A1 of the main frame, or pieces attached thereto, and provided with adjustable boxes or bearings, in which the saw-table is pivoted, as shown at e. The'saw-table E (represented in plan and end views, figs. 4 and 5) maybe of any desired construct-ion, and is mounted on pivotal supports, c c. These pivots, e', are made adjustable, relative to the table and its supports, in such manner as to vary the distance of the pivots upon which it turns, or its fulcrum, from the saw, in connection with which it is operated. The object of this' adjustment will be apparent, viz: the distance of the fulcrum or table is fixed at a distance corresponding to the radius of a circle, in an are of which -it is desired to eut the staves; in other words', in the are of a circle whose diameter conforms to the diameter of the cash org'z'uve'ssel for which staves are to be cut. It will also be vseen that, by arranging the opposite pivots out of line with each other, thereby giving to them the diagonal relation shown in tig. 4, the movement describedby the forward or saw-edge of the table will he in the path of arcs of circles of different diameters, varying according to the varying distance of the pivotal points in the table from the saw or face of the table adjacent to the saw.- El are clamping-levers,pivoted to the saw-table, and armed on their inner ends with dogs, -for seizing and holding the blocks or pieces to he sawed. Eg-is a locking-lever, for locking or clamping the levers after they have properly grasped the block to be sawed. G- is a set-board o1' gauge, for regulating the thickness of the staves, and which may be made adjustable by means of slots and set-screws, or in any'other. usual or convenient, manner. Grvl is a guide-block, for steadying and guiding the thin belt-saw in entering the block to be sawed. Upon the opposite side of the table or frame A to saw-'table E is anotherls'aw-table, F, adapted to the sawving of headings for kegs, barrels, Snc. In this instance, the table is arrangedto move vertically in 'grooved guide-Ways or uprights,-A.z A, attached to the frame A.

The sliding saw-table F is provided Withclampingdevers and set-board or gauge, similar to those on table E, and for a-similarpurpose, the gauge or set-board G, in this instance, also being made adjust-able, for varying the thickness of the heading or shingles, as required. The saw-tables are maintained` in proper position to Vreceive the blocks to be cut by means of 4springs of any suitable construction, and applied in any convenient manner, or by means of counterpoise weights, as may be preferred. In this instance, I have shown rubber Springs, ff, attached at one end to -the saw-table, and at `the other end to the table-supports or frame A.

The saw should be made of a thin .and narrovv plate of steel, so as to possess the functions of a drivingbclt,and be free to turn readily in the direction of its width in the block operated `upon, for the purpdse of` giving the Vdesired curvature .to the staves cut therefrom; and, at the same time, it must be suficiently elastic or pliable to conform to the faces of the pulley around which it passes. While between the points of contact with the oppositer pulleys, by the tension 'exerted thereon by the pulleys when properly adj usted, it is drawn into right lines, of sulicient length to 4accommodate the greatest length of staves to be cut.

The saw has been described and-'shown as arranged vertically, in the direction of its width, upon horizontal pulleys, or pulleys mounted on vertical shafts; but it will be apparent that shafts may be arranged horizontally, if preferred, and a-vertical position givento the saw-tables conforming thereto. The saw, in this case, may be extended in length, so as to accommodate more than onesaW-table. The pulleys or wheels may be enlarged, to permit the arrangement of the tables one over the other, or the belt-wheels may he arranged one over the other on horizontal shafts, and the table side by side, if4 preferred. The surface of the pulleys may be slightly roughened, if desired, tojprevent the slipping of the belt.

Y It will be seen-that the staves are sawed lengthwise in a right line, that any desired curvature in the direction of their width is given by the adjustment of the fulerum or pivotal point of the saw-table, in the manner explained, and also that, bya 'diagonal arrangement of the pivot' or fulcrum,.or an arrangement thereof more or less approaching a diagonal, the staves may be cut of a form suitable for tubs or vessels of a greater diameter at one end than at the other. v

V The machine is readily adapted to saw staves of differenl lengths, by simply adjusting the clamping-levers, so as to properly hold the block to be sawed. One of the 'clamping-levers, or arm and dog, (that which resists action of the saw upon the hlock,) may be rigidly attached to the saw-table, or both may be made adjustable, asl preferred.

twill be obvious that other means than those shown and described for adjusting the saw-tables may be used g' but these suihciently illustrate the nature and object of my invention, viz, the provision of means whereby staves for casks and vessels of different diameters may be cut or sawcd by the same machine.

What I claim, and desire tosecure by Letters Patent, is-

The adjustable feed or sa\vtable,for regulating* the degree of curvature ot` the staves to conform to the diameter of the cask or vessel for which they are to be used, in combination with the narrow endless-belt san',

arranged and operating as described.

W. n. HOPKINS.

Witnesses:

L. Davis, A. V. HOPKINS. 

